Dongfeng KL truck parts Left balance suspension on shock absorber bracket 2904367-TL990

Built as a critical load-bearing component of the balance suspension, this bracket is crafted from high-strength low-alloy (HSLA) steel (Q690 grade) with exceptional mechanical properties. The 12mm thick steel plate undergoes quenching and tempering treatment, achieving a tensile strength of 690MPa and a yield strength of 590MPa—capable of withstanding the 15-ton dynamic load from the shock absorber during rough road driving. The bracket’s integrated reinforcing ribs (20mm height, spaced 80mm apart) enhance structural rigidity by 50%, reducing deformation under load to ≤1mm. In fatigue testing, it endures 2 million load cycles (equivalent to 500,000km of typical operation) without cracks, far exceeding the industry standard of 1 million cycles, ensuring reliable performance for heavy-duty applications

Engineered for perfect fit and stable installation, the 2904367-TL990 bracket features precision manufacturing processes. The main body is formed via CNC stamping (tolerance ±0.3mm) and robot welding (weld seam width 8mm, penetration depth 6mm), ensuring uniform stress distribution and avoiding weak points. The mounting surfaces are CNC-machined to a flatness of ≤0.2mm, creating a tight fit with the balance beam and shock absorber—eliminating gaps that cause vibration and noise. The bolt holes are tapped with high-precision tools (thread tolerance 6H), ensuring smooth assembly with M16 high-tensile bolts (Dongfeng OE 10.9 grade). This precision ensures the shock absorber is installed at the optimal 15° angle, maximizing its damping efficiency and extending its service life by 30%

Optimized to withstand the harsh corrosion and wear environment of truck chassis, the bracket adopts a multi-layer protective coating system. The primary layer is a zinc-phosphate conversion coating (10μm thickness) for rust priming, followed by a cathodic electrophoretic coating (30μm thickness) that forms a seamless anti-corrosion barrier. The top layer is a high-durability powder coating (45μm thickness) with anti-chip properties, resisting scratches from road debris. This coating system passes 3000-hour neutral salt spray testing (ASTM B117) with no rust or peeling—ideal for coastal regions and snowy areas with road salt. The bracket’s contact surfaces with the shock absorber are coated with anti-wear grease (operating range -40℃ to 150℃), reducing friction and preventing metal-to-metal wear

This shock absorber bracket plays a pivotal role in balancing the suspension load and reducing long-term maintenance costs for Dongfeng KL operators. By securely mounting the shock absorber and distributing dynamic loads evenly across the balance beam, it prevents uneven tire wear (saving $800+ per set of tires) and reduces stress on suspension bushings (extending their service life by 40%). The high-strength construction avoids bracket failure, which can cause shock absorber detachment (leading to suspension collapse and $5,000+ in repair costs). The OE-compatible design ensures no need for suspension recalibration (a $400+ service for non-OE parts), minimizing downtime. With a service life of ≥600,000km—twice that of aftermarket brackets—and a 2-year/250,000km Dongfeng warranty, it provides reliable load support and predictable maintenance expenses for fleet operations